Resumen
Wake patterns due to a uniformly traveling source are a result of the resonant emission of the medium's collective excitations. When there exists a frequency range where such excitations possess a negative group velocity, their interference leads to a wake pattern resembling the Kelvin ship wake: while there are "transverse"and "divergent"wave fronts trailing the source, they are oriented oppositely to Kelvin's. This is illustrated by an explicit calculation of "roton"wake patterns in superfluid He4 where a Kelvin-like wake emerges when the speed of the source marginally exceeds the Landau critical roton velocity.
| Idioma original | English |
|---|---|
| Número de artículo | 054509 |
| Publicación | Physical Review B |
| Volumen | 105 |
| N.º | 5 |
| DOI | |
| Estado | Published - feb 1 2022 |
Nota bibliográfica
Publisher Copyright:© 2022 American Physical Society.
Financiación
This work was performed in part at Aspen Center for Physics, supported by National Science Foundation Grant No. PHY-1607611.
| Financiadores | Número del financiador |
|---|---|
| U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China | PHY-1607611 |
| U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics